iPadOS 13.1 (build 17A5831c) is an official Apple over-the-air update for the iPad Air 3 (Cellular), released on 2019-09-04T17:05:31Z. The update package is 332.97 MB. This is a delta (partial) update that requires 13.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a1f7429fca6b91e2aed8edae54ebc7baad01d928.zip.